ASTROSAT CZTI

Data Quality Report

Orbit 37789

Creation date: 2024-06-27T21:44:27.629853
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_057T01_9000005346_37789cztM0_level2.evt modeM0/AS1T05_057T01_9000005346_37789cztM0_level2_quad_clean.evt
Size (bytes)855,976,320110,401,920
Size816.3 MB 105.3 MB
Events in quadrant A5,549,780677,882
Events in quadrant B5,769,353670,600
Events in quadrant C5,544,732674,455
Events in quadrant D8,338,988582,246

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227694
B0241173
C0227513
D0320663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10646450.422694%
B106461091.023859%
C106461111.042645%
D10646127511.976329%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 13421 10648 26 26 0.19% 0.24%
B 13421 10648 56 56 0.42% 0.53%
C 13421 10648 88 88 0.66% 0.83%
D 13421 10648 1303 1303 9.71% 12.24%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 611581 2494.8 1212 1189 244.7
A 9 143 185525 753.42 1212 1189 244.7
A 13 6 24807 96.53 1212 1189 244.7
B 0 219 215697 912.84 1207 1174 235.0
B 4 81 161720 683.15 1207 1174 235.0
B 4 171 130930 552.14 1207 1174 235.0
C 15 214 485886 1754.22 1176 1186 276.3
C 0 207 231109 832.14 1176 1186 276.3
C 14 254 87848 313.65 1176 1186 276.3
D 7 223 3040829 10876.73 1134 1101 279.5
D 1 47 187910 668.44 1134 1101 279.5
D 13 249 171533 609.84 1134 1101 279.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter